A142 Ely Southern Bypass

Cambridgeshire, UK

Tony Gee was appointed by VolkerFitzpatrick to undertake the preliminary and detailed design of the new A142 Ely Southern Bypass.

The scheme brings a much needed new road to alleviate traffic problems, including large volumes of heavy goods vehicles which currently go through Ely. This includes two new roundabouts with the road built up on embankment, a 300m long viaduct structure crossing the River Great Ouse floodplain and a 100m long bridge crossing two railway lines.

One of the challenges was designing the geometrically complex V-shaped piers on the viaduct. This was addressed through fully exploiting our 3D reinforcement detailing software, Design for Manufacture and Assembly. This included a clash detection and producing an animated reinforcement fixing sequence in NavisWorks to aid the contractor, as well as reduce congestion and improve safety for site personnel.

These benefits have been realised with VolkerFitzpatrick saving a substantial amount, based on avoiding re-work, reinforcement wastage and delays to the programme. Throughout the design stages, the team was consistently surprised by the cross-sections cut through the 3D model of the V-piers. This demonstrated it would have been close to impossible to detail the reinforcement using conventional 2D methods.


SynopsisPreliminary and detailed design of new bypass. Time and costing saving solution utilised 3D reinforcement software to design complex V-Piers
End ClientCambridgeshire County Council
Sectors and ServicesHighways & Infrastructure
Permanent works design
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